Spectral Seas

This update has only one notable new feature, but it's a big one!

• PIRATE SHIPS ON THE HIGH SEAS
  • Appear randomly in deep ocean biomes
  • More likely to appear at dawn, dusk, in the rain, or on nights with a new moon
  • Chase players around firing volleys of cannonballs
  • Flee when out of ammunition
  • More likely to appear, faster, and more heavily armed depending on local difficulty

Also:

• Fixed an issue where the Deeper Down dimension got weird because it reused noises and density functions from the overworld.